Music-leaf turner



What I claim is as follows:

1. In an engine'control system, the combination with an internal-combustion engine having a throttle valve; manual means for controlling the throttle valve; a starting device for the engine; and means for controlling said starting device and said manual means to limit to a partly open position the opening of said throttle by said manual means whereby to prevent racing when the engine becomes self-operative.

2. In an engine control system, the combination with an internal-combustion engine having a throttle valve; manual means for controlling the throttle valve; a starting device for the engine; and means for controlling said starting device and said manual means to limit to a partly open position the opening of said throttle by said manual means whereby to prevent racing when the engine becomes self-operativ-e, said starter controlling means permitting a limited control of said throttle by said manual means.

3. In an engine control system. the combination with an internal-combustion engine having a throttle valve: manual means for controlling the throttle valve: a starting device for the engine including a power device and gearing to connect the same with the engine: and means for controlling the power device for moving certain of said gearing into and out of mechanical connection with the engine and for limiting to a partly open position the opening of the throttle by said manual means.

I. In an engine control system. the combination with an internal-combustion engine having a throttle valve and a gear: manual means for controlling the throttle valve; a

starting device including an electric motor and a motor pinion shifting into connection with said engine gear: and means for rendering the motor operative. for moving said pinion into and out of enm :shment with said engine gear and for limiting to a partly open position the opening of said throttle by said manual means.

5. In an engine control system, the combination with an internal-combustion engine: of means for controlling the speed of operation of the engine: a starting motor normally disconnected from the engine: and means for connecting the starting motor with the engine and for controlling said speed controlling means wherebv the .engine speed is limited to a value less than maxi-' mum.

6. In an engine control system. the combination with an internal-combustion engine having a gear: of a starting motor having a gear connected therewith, means for controlling the speed of operation of the engine; and means for connecting said gears and for controlling said speed controlling means whereby the engine speed is limited to a value less than maximum.

7. In an engine starting system, the combination with an internal-combustion engine having a throttle; of a starting device; means for controlling the throttle including a hand lever and a foot pedal, the movement of the foot pedal permitting the setting of the hand lever to remain undisturbed; and means for rendering the starting device operative and for limiting the movement of the throttle by either the hand lever or the foot pedal to a predetermined partly closed position. 1

8. In an engine starting system, the com-- having a throttle: of a starting device; nor-- mall v disconnected gearing between the starting device and engine: means for controlling the throttle including a hand lever and a foot pedal. the movement of the foot pedal permitting the setting of the hand lever to remain undisturbed: and means for rendering the starting device operative. for connecting said gearing and for limiting the movement of the throttle by either the hand lever or the foot pedal to a predetermined partly closed position,

10. In an engine control system, the combination with an internal combustion engine; of an engine starting devicermeans for controlling the speed of the engine; and means for rendering the starting device op erative to crank the engine and for controlling said speed controlling means whereby the engine speed is limited to a value less than maximum.

In testimony whereof I aifix my signature.

CHARLES F. KETTERING.

'itnesses:

HAZEL SOLLENBERGER, MILDPBD PEARE.

K. 0. W. LINDQUIST. MUSIC LEAF TURNER. Arfrglcmon FILED ocT. I3, 1919.

1,434,015; I Patented 00a 31, 1922.

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@zjdjtafaiw/eg Wit/z K. 0. W. LINDQUIST. MUSIC LEAF TURNER. APPLICATION FILED oer. I3. 1919.

Patented 0611.31, 1922.

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Wm M fl w .E 1 km Patented Oct. 31, 1922.

KNUT OLOF WILLIAM LINDQUIST, OF CHICAGO, ILLINOIS.

MUSIC-LEAF TURNER.

Application filed October 13, 1919. Serial No. 830,209.

To all whom it may concern:

Be it known that I, KNU'r OLOF WILLIAM LINDQUIST, a subject of the King of Sweden, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Music-Leaf Turners, of which the followinglis a specification. I

y invention relates to improvements in music leaf turners, and has for its object the provision of an improved construction of this character by means of which the separate leaves or sheets of a pieceof music may be readily turned by the'operator, and which is of simple construction and efiicient in operation.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which, 7

F ig- 1, is a partial face View, shown partially in section, of a music leaf turner embodying the invention,

Fig. 2, a vertical section taken through a pump cylinder employed in the construction Fig. 3, a horizontal section taken on line 33 of Fig. 1,

. Fig. 4, another horizontal section of the device taken on a different plane and showin the parts in somewhat different relation,

5, a section taken on line 5--5 of Fig. 1, I

ig. 6, a section taken on line 66 of Fig. 1 and Fig. 7, a partial face view of the device, with parts removed for the sake of clearness.

The preferred form of construction, as illustrated inthe drawings, comprises a suitable supporting plate S, adapted to be supported or arranged on the ordinary music rack of a piano or other suitable support, to hold the leaves or sheets of music in proper position for playing. A central supporting rod 9 is mounted in cars. 10 struck outwardly from the body of plate 8, and three leaf carrying arms 11, 12 and 13 are pivoted on the rod 9 to swing freely thereon in sub stantially horizontal planes. Each of said leaf carrying arms is provided with a suit-- able clamp 14 adapted and arranged to support and carry the leaves or sheets of music 15 partially indicated in Fig. 1.

Each of said leaf carrying arms is rovided with a spring arm 16 connected by means of a corresponding plate 17 with a corresponding spring 18 secured to the outer face of plate 8, the arrangement being such that the springs 18 exert an initial starting tension tending to start the swinging of said leaf carrying arms in each direction, as will be readily understood.

Two operating arms 19 and 20 are also mounted to swing freely on the rod 9, the

arm 19 being mounted on an inner sleeve or hub 21 and the arm 20 being mounted on an outer sleeve or hub 22. A coiled spring 23 is coiled on the sleeve 21, with its ends restin against the respective arms 19 and 20, and arranged to hold said arms normally fiat against the face of the plate 8. Sleeve .21. carries, at its upper end, a pinion 24, and

sleeve 22 similarly carries a pinion 25, as shown. The pinion 24 meshes with a muti lated rack bar caused by forming perfora tions or openings 26 through a plate 27 in longitudinal alignment with a slot 28, and pinion 25' similarly meshes with a similar mutilated rack bar 29 in alignment with a slot 30 in said plate 27. The arrangement is such that movement of the plate 27 in one direction will cause operative rotation of the sleeve 21 and arm 19 in one direction, and operation of the plate 27 in the opposite direction will cause operative operation of the arm 20 in the opposite direction- 1 The plate 27 is formed as a part of a piston rod 31 carryin a piston 32 positioned substantially centra ly in a pneumatic cylinder 33 mounted on the plate 8 as shown. The cylinder 33 is in open communication, through a flexible hose or tube 34, with the lower portion of a pump cylinder 35 which may rest upon the floor or other suitable I prisoned therein. The lever also bears against the opposite forks 4'? of a yoke secured to the upper end oi plunger 45, and whereby depression of either end of the lever 40 compresses the spring 46 to ei'lect return of said lever to its central normal position. Such operation of lever 40, when it forces the piston 36 downwardly, forces compressed air into the cylinder 33, and re verse operation of said lever rareiies the in said cylinder, thus serving to reciprocate the piston 33 therein. As previously indicated, the movement 01" the piston in one direction or the other serves to operate one or the other of the operating arms 1.9 and 20. Each of the operating arms 19 and 20 carries a radially slidable plate 48 normally pressed inwardly by means of aspiring 49 and pros A red at its lower inner edge with a latch 50., as shown, Each of the slides 48 also c ries on its bottom three notches 52 co operati with a corresponding stop spring 5i mou d on plate 8, shown, and tending to hold the corresponding slide 48 in three dii'lerent radial positions. The leaf carrying arms 11, 12 and 13 are provided with stepped shoulders 53 and 54, as shown, said shoulders being adapted and arranged to assume overlapping relations with respect to each other, as best indicated in Figs. 4 and 7, said shoulders being set in the operative paths oi? the latches and co-operatlug-therewith. Each of the slides 48' carr s a trigger plate 55 pivoted at 56 and normally held in depressed position by means ot a spring 57, each of said plates being proviced with an outer cam surface 58, inclined as shown, and adapted and arranged to operate on the corresponding shoulders or 54, as the case may be. The arrangement is s ch that as each leaf carrying arm swing, outwardly from either position acent the plate 8, the corresponding trigger 55 idly yields to permit oi free passage, but as each of said leaf carrying arms swings inwardly to operative relation against plate 8, the corresponding cam surtace 58 is engaged by the corresponding shoulder 58 or 54, as the case may be, and the corresponding slide 48 forced outwardly by said inward movement of the correspond ir lea'licarrying arm, the overlapped or stepped relations of said shoulders serving to cause successive progressive outward movements of said latch plates 48. The outer increment of the slide 48 is effected by the inclined plane action of the cam surface on the corresponding shoulder53 or 54. Each of the arms 19 and 20 also carries a spring-held latch pawl 59 arranged to engage teeth or notches 60 in a bar (31 secured to the. side of the coiesponding slide 48. Each oi? the pawls 59 also carries a depending linger 82 adapted to contact with the plate 8 at end of each inward moveruse-ere ment of the corresponding operating arm, and thus release the corresponding slide 48 for radial movement. The arrangement is such that upon each outward movement of each operating arm 19 or 20, as the case may be, the corresponding latch 50 is in normal position to engage the outermost shoulder or 54, as the case may be, and carry the corresponding carrying arm around with it through its operative swing, and whereby it willbe observed that the music leavesflinay be readily turned. As each leaf carrying arm reaches the end of its swinging movement, it encounters the correspondtrigger 55, forcing the corresponding plate outwardly to set the corresponding latch 50 for engagement ,otthe shoulder 53 on the corresponding leaf carrying arm, so that the corresponding latches '50 are always in position to engage the corresponding shoulder on the leail carrying arm which has last been operated, so thatthe last arm operated will be the first to be returned under normal conditions, and whereby, it will be observed, the operator may readily operate the device to turn the sheets of music in the proper manner for playing andreturn them in the same order; lVhen it is desired to turn a pluality of sheets at the same time, as in returning the sheets alter use of the same, the corresponding arm is first given an initial but only partial opera tion to correspond with the number of sheets it is desired to turn simultaneously. Upon each oi such partial operations, the correspending slide 48 will be released and moved inwardly in substantially the same manner Whenit is desired to turn a single sheet, as

herein set forth to engage the next lower leaf carrying arm, and whereby the device may be readily set to turn all or a part of the sheets thereon simultaneously.

l Vhile I have illustrated and described the preferred form of construction tor car rying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. 1, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope oi? the appended claims.

Having described my invention, what l claim as new and desire to secure by Letters Patent is 1. A music leaf turner comprising a sup port; a plurality of leaf carrying arms pi-vo tally mounted on. said support; leaf clamps on said arms; two swinging operatingarms mounted coaiiially with said leaf carrying arms; trigger mechanisms radially slidably mounted on said o o automatical y en age said leaf carrying arms and swing the ne in opposite iiectrons; means for varying the radial posi- 

